Features:
* Renamed app from Splitfit to GymRoutines (#41)
* The app now has a new launcher icon
* Simplified "About" screen (53674304, e3711b53, bc6e2025)

Development:
* Remove build flavors (#38)
* Change package name from com.noahjutz.splitfit to com.noahjutz.gymroutines
* Move source code to codeberg (#36)

Misc:
* Updated screenshots (0b819e6c)
* Updated README (e9d0e97d, 60edf19b, 3a1d95b4, b4e7193d)
* Updated CONTRIBUTING (1a49c464, a834417d)
